Metal weather strip



ou. 3o, 192s. 1,689,813

J. E. BERGFALK ET AL METAL WEATHER STRIP Filed oct. 9, 1925 le/5- 4' aINV TOR .fasi/H E 5 a/-A Eff/v B15-fafa# ATTOR Y Patented oct. 3o, 1928.

UNITED 'STATES PATENT OFFICE-.

JOSEPH E. BERGFALK AND svEN A. BEEGFALE, or NEW YORK, N. Y.

METAL WEATHER STRIP. y

Application filed October 9, 1925. SerialNo. 61426.

This invention relates to improvements in metal weather strips.

rlhe object of this invention is to produce a metal weather strip whichhas wide limits of adjustment so as to fit and compensate for relativelywidevariations in the spaces between the adjacent surfaces of the sashand frame due to variation in the widths of sashes in relation to theinner' surfaces of the frames and still produce a tight weather proofoint between such adjacent surfaces..

Another object of the invention is to utilize a construction of weatherstrip which when applied on opposite sides of a sash will provide apair. of firm, though cushioned, tracks for the sash and will preventany rattling ofthe sash during operation by maintaining` close and firmthough resilient contact at opposite edges between the sash. and frame',even though the space between the sash and groove surface is relativelylarge.

Another object of the invention is to produce a metal weather stripwhich will be extremely simple and efficient in its' function of weatherproofing sliding sashes and which will facilitate the assembly of thesashes and frame.

With these and other vobjects in View, the

invention comprises the combination of members and arrangement of partsso combined as to co-act and cooperate ywith each other in theperformance of the functions and the accomplishment of the resultshereinV contemplated and comprises in one of its adaptations the speciesor preferred form illustrated vin the vaccompanying drawings, in which jFig. 1 is a fragmentary horizontal cross section through opposite stilesof thesash and frame on which ourweather strip is applied;

Fig. 2 is a view, in perspective, of one member of a pair of metalweather strips embodying our invention;` and Y f 1 Fig. 3 is a view, inperspective, of a cushioning element embodying our invention.

Referring now to Figs. 1 to 3 of these drawings which illustrate aVpreferred embodiment of our invention, 1 indicates the oppositepulley-stile members or j ambs of a conventional windowframe or casinghaving sash grooves 2 formed between `molding 3 and parting beads 4 inwhich grooves a sash 5 having` stiles 6 is mounted to slide vertically.

Sashes of varying widths will obviously cause the spaces at oppositesides thereof be tween the edges of the stile 6 and the su-rfaces7 ofthe pulley-stile members 1 to vary, it being apparent that the narrowerthe sash the wider willbesuch spaces betweenl the edges thereof and thesurfaces of the jamb and in accordance with our invention, we-provideweather strips which not only span spaces of'varying widths and yprovideair-tight and water-tight joints between such sash and frames but alsoprevents excessive side-wise movement of the sashes which would cause arattling lduring a raising and lowering operation anch-furthermore,provides arpair of smooth flat and firmly supported, though cushioned,tracks 'for thev sash to slide upon, lthus facilitating the operation ofraising vand, lowering'the sash. This is accomplished by the use/of aweather strip whichfis extremely simple in construction and may bemanufactured-at fa very low cost.

In the construction illustrated, we provide v the edges of the sashsti'les 6 intermediate the outer and inner side faces with Grooves 8and, as illustrated, we insertin each of the said grooves@ between theedges ofv said lstiles 6 and the face of the. pulleystile 1, a `metal yweather strip 9. Each strip has one margiF nal edge anchored to theframe or pulley stile at one-,side of the sash groove, an oppositemarginal edge freely movable in a groove in said pulley stile at theopposite. side of the sash groove, and an intermediate por- .tion formedinto va loop 12 which engages the groove 8 in the sash,:Leash-contacting track portion between said loop and the free marginaledge and a space-bridging portionv be# tween said loop and saidanchoredmargin.

As shown, theanchored marginal edge has an i attaching flange; 10 whichextends beneath the molding 3 at one side of the, sash groove 2 and isthere anchored to the pulley stile 1 by nails 10a while the oppositemarginal edge terminates in a freely movable flange 15 bentat a right,angle from the body of the strip and fitting in a grooveor kerf 4l?formed at the opposite side of the ysash groove be tween theparting beadf1 and the wall 1a of a groove 4e within which theparting bead 4 seats.yThe.intermediatesportion 11 extends the entire width of the groove 2 andis provided with said intermediate groove-engaging loop-portion`12 whichdivides said intermediate portion to `produce a space-bridging portion 13 at one side of said loop and a sash-contacting-track portion 14 at theopposite side thereof, which latter portion IUT) merge'swith said flange15' which; is movable in said adjusting groove 4".-

This construction of weather strip when properly. supported will Aclosethe spaces between the s'ii'rfaces of the jam'b 7 and the edges of thesash to form water-tight and air-tight joints and the movement of thefree-edged flange in the groove 16 will enable adjustability of thestrip which may be'utilized to provide such a weather-proof joint"across Spaces of relatively' wide variation due to variations in thewidths ofsash and frames. 1t will be lclearth'at tliebridge portion 13is fieXible andv will swing about the joint 16 bel' tween the saidatt-aching flange 10, thus', in

effect, providing a'Y hinged joint which will allow substantially freem'ovoi'i'iei'itl to'accoinoi date itself, aforesaid,v to widths ofvarying spaces.'

, 'While a resilient construction of type so far described isdesirable'to procure a. tightjoint overwidely varying spaces, asaforesaid, it is inenective to prevent lateral movement of the sashwhich sometimes causes rattling and will not form a properly supportedand onshiooeii track for' the sash. in order, therefore, to prevent suchrattling, to reinforce and 'cushion the Ac''ontacting-t-rack portion YM'and cause it to' hug the sash so as to provide a properly Supportedthough resilient guiding member for the sash, we insert within the spacebetween the bo y portion 11 of the weather stripy nd'the surface 7 ofthe groove, aresilient cushioning and compensating elenient 17preferably comprising; as shown in Figsl to 3 an independent foldedstrip of rI i'ietal bent intermediate its edges toprovide free flanges18 and 19 at opposite sides of the bend 20. This cushioning compensatingelement may thus be readily and easily inserted between the surfaces ofthe groove and the body portion ofthe weather strip and not onlyycompensatesl for varying sizes .of spaces Vbut will resilientlyjpressthe track portion 14 into'v firm contact with the edge 'of the sash soas to effectively prevent the saine from rat tling,tl1`1'1's convertingsaid freely movable c'ontacting portion ofthe flexible weather stripinto a spring-pressed portion and producing firm thotigh resilientguiding members forv theopposite edges ofthe sash.

It will be seen that the vuse ofan Vindependent cushioning strip willpermit rea-dy insertion ina groove the edges of which are closed so asto avoid open' grooves which gather dirt vand also will avoid allunnecessary bending or doubling of the weather strip proper.

Having described our invention, we

claim Y 1. `The combination with awin'dow frame yin' sai grooves andhaving grooves at its grooves and having the opposite ed said'stripbeing be'nt intermediate edges to names to havin sash grooves and a sashmounted withposite side edges of weather strips arranged Y within saidgrooves, each having a connection at one marginaledge to one side of oneof said (re free, the

form a loop extending into said groove in the sash and having aspace-spanning portion be- .tween said loop aiidsaid connected marginaledge and a contacting track-portion between said loop and the freeedge,'sa1d free edge having a freely movable flange bent at a rightangle to the body of the strip extending'- in a f direction opposite tothe said loop and in a. plane parallel therewith, and meansforresiliently forcing said contacting track portion into engagementwithtlievedge of the Sash.' l l i 2. The combination with a window framehaving sash grooves and a sash mounted within said grooves andhavinggrooves at its opposite side edgesof weatherstrips arranged within saidgrooves, each having va yconnection at one marginal edge to one side ofone of said grooves and having the opposite edge free,V

thesaid strip .being bent intermediate its Y edges to form a' loopextendingffinto ysaid 'groove inthe sash and having a space-spanning'portion between said loop and said con` lnected marginal edge anda'contact'ingtrackport-ion between said loop and the free edge, saidfree edge having a freely movable flange bent at a right? angle to thebody of the strip extending in a directionopposite to` the said loop andin a plane parallel therewith,

and an independent resilient Velement farranged in back of said trackportion to force the same into engagementwith the edge of the sash. f

ico

3. The combinano-n with a' window'. fm1-nog having sa sh grooves and asash mounted with# in said grooves and having grooves at its oppositeside edges of weather strips arranged within said grooves, each havinga"y connection vat one marginal edge to one side ofone of 'said groovesand' having the opposite edge free, the said strip being bentintermediate its edges to form a loop' extending'- into said groove inthe s'ash and.. having a space-spanning portion between said loop andsaidrconnected marginal edge anda vcontac'tingtrackportion between .sadloop' and the free edge,

